The Isekai novel series of Cheat Skill wo Te ni Shita Ore wa, Genjitsu Sekai wo mo Musou Suru: Level Up wa Jinsei wo Kaeta

Promotional video for the animated adaptation of the Isekai novel series of Cheat Skill wo Te ni Shita Ore wa, Genjitsu Sekai wo mo Musou Suru: Level Up wa Jinsei wo Kaeta. In the video you can hear the opening, titled "Gyakuten Geki", performed by Tsukuyomi.